The pizzerias mentioned in the article are the same ones mentioned in the Pollack-Ruby book but in a different order. When I read the book shortly after its publication I couldn't find the criteria for the pizzerias selected, as I noted in my review of the book at http://www.pizzamaking.com/forum/index.php/topic,1957.msg18205.html#msg18205. As noted in the review, I had spoken to Penny Pollack just prior to publication of the book and tried to get her to visit our forum, which at the time didn't seem to interest her. I was most surprised to find that our forum did make it into the Pollack-Ruby book, apparently as an afterthought.